期刊
ADVANCED MATERIALS
卷 34, 期 46, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202107940
关键词
magic-size clusters; nucleation and growth; precursor compounds; selective production; semiconductor quantum dots; two-pathway model
类别
资金
- National Natural Science Foundation of China (NSFC) [21773162, 32000934]
- Fundamental Research Funds for the Central Universities
- State Key Laboratory of Polymer Materials Engineering of Sichuan University [sklpme2020-2-09]
- Open Project of Key State Laboratory for Supramolecular Structures and Materials of Jilin University [SKLSSM 2021030]
A fundamental understanding of formation pathways is critical to controlled synthesis of colloidal semiconductor nanocrystals. An unconventional, selective approach and a two-pathway model have been developed to decouple the evolution of ultrasmall quantum dots (QDs) and magic-size clusters (MSCs). Manipulation of precursor compounds enables synthesis of different types of nanocrystals, which is significant for the development of nucleation theory and synthesis of nanomaterials.
A fundamental understanding of formation pathways is critical to the controlled synthesis of colloidal semiconductor nanocrystals. As ultrasmall-size quantum dots (QDs) sometimes emerge in reactions along with magic-size clusters (MSCs), distinguishing their individual pathway of evolution is important, but has proven difficult. To decouple the evolution of QDs and MSCs, an unconventional, selective approach has been developed, along with a two-pathway model that provides a fundamental understanding of production selectivity. For on-demand production of either ultrasmall QDs or MSCs, the key enabler is in how to allow a reaction to proceed in the time prior to nucleation and growth of QDs. In this prenucleation stage, an intermediate compound forms, which is the precursor compound (PC) to the MSC. Here, the two-pathway model and the manipulation of such PCs to synthesize either ultrasmall QDs or binary and ternary MSCs are highlighted. The two-pathway model will assist the development of nucleation theory as well as provide a basis for a mechanism-enabled design and predictive synthesis of functional nanomaterials.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据